/**
 * 
 */
package people;

import java.util.Calendar;

/**
 * A person who considers themself a Hokie
 * 
 * @author maellis1
 * @version May 2020
 *
 */
public class Hokie {
    private String pid;
    private String hometown;
    private int graduationYear;
    private int DOBYear;


    /**
     * Constructor
     * 
     * @param pid
     *            personal id associated with Virginia Tech
     */
    public Hokie(String newPID) {
        pid = newPID;
    }


    /**
     * Constructor
     * 
     * @param pid
     *            personal id associated with Virginia Tech
     * @param graduationYear
     */
    public Hokie(String hokiePID, int graduationYear) {
        pid = hokiePID;
        this.graduationYear = graduationYear;
    }


    /**
     * setter for graduation year
     * 
     * @param gradYear
     */
    public void setGradYear(int gradYear) {
        this.graduationYear = gradYear;
    }


    /**
     * setter for hometown
     * 
     * @param hometown
     */
    public void setHometown(String hometown) {
        this.hometown = hometown;
    }


    /**
     * getter for graduation year
     * 
     * @return year of graduation
     */
    public int getGradYear() {
        return graduationYear;
    }


    /**
     * getter for pid
     * 
     * @return pid
     */
    public String getPID() {
        return pid;
    }


    /**
     * getter for hometown
     * 
     * @return hometown
     */
    public String getHometown() {
        return hometown;
    }
    
    /**
     * Returns an int representing this Hokie's data of birth
     * 
     * @return year of date of birth as an int
     */
    public int getDOBYear() {
        return DOBYear;
    }

    
    /**
     * Sets birth year if between 0 and 3000, returns true if successful
     * 
     * @param birth year
     */
    public boolean setDOBYear(int year) {
        if (year > 0 && (year < 3000)) {
            DOBYear = year;
            return true;
        }
        return false;
    }


    /**
     * Determines next reunion year based on reunions every 5 years
     * Note: does not include this year
     * 
     * @return year of next Reunion
     */
    public int nextReunion() {
        int currYear;
        currYear = Calendar.getInstance().get(Calendar.YEAR);
        // use modulo
        int yearDiff = currYear - graduationYear;
        if (yearDiff <= 0)
            return currYear + (5 - yearDiff);
        else
            return currYear + (5 - (yearDiff % 5));
        // could use a loop
        //int checkYear = graduationYear + 5;
        //while (checkYear < currYear)
        //        	checkYear += 5;
        //return checkYear;

    }



    /**
     * Determines whether the current object matches its argument.
     * 
     * @param obj
     *            The object to be compared to the current object
     * @return true if the objects have the same name and address;
     *         otherwise, return false
     */
    @Override
    public boolean equals(Object obj) {
        if (obj == this)
            return true;
        if (obj == null)
            return false;
        if (this.getClass() == obj.getClass()) {
            Hokie other = (Hokie)obj;
            return pid.equals(other.pid)
                && graduationYear == other.graduationYear;
        }
        else {
            return false;
        }
    }


    /**
     * Returns a string representing this Hokie
     * 
     * @return pid as a string
     */
    public String toString() {
        return pid;
    }


    /**
     * one class in a program can have a main method
     * it is the entry point for a program if it is run as an application
     * 
     * @param args
     */
    public static void main(String[] args) {
        Hokie bruceSmith = new Hokie("bsmith", 1984);
        int saveTheDate = bruceSmith.nextReunion();
        System.out.println("Be in Blacksburg, Homecoming " + saveTheDate 
        		+ "!");
    }
}